Road to Net Zero- Corey Chinn, PE Sustainable facilities do not have to be complex or expensive “Technical skill is the mastery of complexity, while creativity is the mastery of simplicity.”- Christopher Zeeman

Net Zero Experience Pitfalls Lack of Clear Goals Mid Stream Attempts Lack of Buy-In Lack of Experience Insufficient Timing/Funding Keys to Success Set clear goals Start at the beginning Team buy In Defined leader Comfort zone Budget

Net Zero Experience- Establish Foundation o Build on what you know o Simple Foundations; Site EUI and ECI Folk’s House: 1720 sf EUI= kbtu/sf/yr Utility Cost~ $3293/yr ECI= $1.91/sf/yr My House: 1250 sf EUI= kbtu/sf/yr Utility Cost~ $1100/yr- ($1,514, 2015) Gas= EUI/ $489 Electricity= 10.2 EUI/ $595 ECI= $0.88/sf/yr- ($1.21, 2015) Electric Rates= $0.11/kwh, $0.0312/kbtu plus $29.95 meter fee Gas Rates= $0.54/CCF, $0.65/Therm, $0.0065/kbtu plus ~$ meter fee

Net Zero Experience- Paradigm Project R-50 roof R-22 ICF basement walls Low-e Double Pained Windows R-22 walls Energy Recovery Ventilator 96% Efficient Furnace Automated Ventilation Min. Infiltration DUPLEX HOMESRANCH HOME

Ranch Home Area= 1663 ft 2 EUI= 28.4 kbtu/sf/yr Annual Energy Cost= $583, $0.351/sf/yr Duplex Home- Average Area= 2236 ft 2 EUI= 39.4 kbtu/sf/yr Annual Energy Cost= $778, $0.348/sf/yr (Duplex 1-$595/yr, 2-$961/yr) Net Zero Experience- Paradigm Project Results Paradigm Construction Cost ~$116/ft 2

Net Zero Experience- Josephine Commons, Duplexes Duplex 833 Dounce Area=1,424 ft 2 EUI=39.6 kbtu/sf/yr Annual Energy Cost= $569 ~ $0.40/ft 2 /yr Duplex 831 Dounce Area= 1,424 ft 2 EUI= kbtu/sf/yr Annual Energy Cost= $146 ~ $0.10/ft 2 /yr Duplexes Construction Cost ~$108/ft 2

Net Zero Experience- Josephine Commons, Setting Goals When you hear / think… o 100 kBtu/SF/yr ≈ 20 MPG o 60 kBtu/SF/yr ≈ 45 MPG Bear in Mind… o Office Building EUI 93 kBtu/SF/yr o Food Service EUI 258 kBtu/SF/yr o Public Safety EUI 82 kBtu/SF/yr Josephine Commons Goals o EUI 76.3 kBtu/SF/yr (109 Baseline) o ECI $1.05/sf/yr ($1.50 Baseline) Lodging Energy Breakdown 100 kbtu/SF/yr Load Description Percentage Space Heating31 Water Heating17 Cooling15 Lighting12 Other9 Cooking5 Office Equipment4 Ventilation4 Refrigeration3

Net Zero Experience- Josephine Commons, Start at the Beginning

Net Zero Experience- Josephine Commons, Team Buy In Support Team Decisions o Parameters for proper R-Value Consideration o 78,000 SF, baseline R , ASHRAE Zone 5b o R-28 – 12.9% Savings o R-23.5 – 13.3% savings

Net Zero Experience- Josephine Commons, Exceeding Goals Document Simulated or Reported Systems Included Electric Use (kWh) Unit Cost $/kWh Electric Cost ($) Gas Use Therm $/ Therm Gas Cost ($) Total Energy Cost ($/yr) EUI (kbtu/sf /yr) ECI ($/sf/yr) Source EUI Energy Star Target Finder Average Building Whole Building1,179,821$0.068$80,51142,917$0.80$34,334$114,864109$ Energy Star Target Finder- Design Target Whole Building825,875$0.068$56,35830,042$0.80$24,034$80, $ FGI Life Cycle Cost Analysis-HVACHVAC682,484$0.068$46,573 $0.80$0$46, $ GEO Life Cycle Cost Analysis- HVACHVAC $0.070 $0.65$0$51,474 $0.674 Energy Simulation Report- Design Whole Building987,178$0.075$74,3116,874$0.72$4,943$79, $ ASHRAE Baseline Energy Simulation Whole Building1,496,432$0.089$132,8248,286$0.71$5,905$138, $ Energy Simulation Report- Construction Whole Building1,126,800$0.073$82,3666,554$0.75$4,908$87, $ ASHRAE Baseline Energy Simulation Whole Building1,610,200$0.090$144,8837,958$0.74$5,921$150, $ Actual Utility Usage Billing 12/2012 thru 11/2013 Whole Building464,700$0.098$45,5263,084$0.80$2,472$47, $ Actual Utility Usage Billing 1/2014 thru 12/2015 Whole Building519,900$0.098$47,342 5,699 $0.737$4,092$51, $ Source to Site Ratios o Electricity -> o Natural Gas -> 1.092

Net Zero Experience- Josephine Commons & Aspinwall Josephine Commons 30 kBtu/sf/yr= 63% savings $0.66/sf/yr= 56% savings Savings over Energy Star average new Construction Construction costs……. $166/sf Annual Savings $63,431

Net Zero Experience- Aspinwall TH 722 Excelsior E Area= 650 ft 2 EUI= 47.3 kbtu/sf/yr Annual Energy Cost= $633 ~ $0.97/ft 2 /yr TH 819 Dounce C2 Area= 1500 ft 2 EUI= 74.5 kbtu/sf/yr Annual Energy Cost= $2,188 ~ $ /yr TH 815 Dounce C2 Area= 1500 ft 2 EUI= 40.7 kbtu/sf/yr Annual Energy Cost= $972 ~ $0.65/ft 2 /yr Aspinwall Construction Cost ~$95/ft 2 Education to Users is imperative Better Maintenance = Better Efficiency Build on Lessons learned Understand your Loads and Durations

Net Zero Experience- Thank you!